feat(cashier): add GL denomination tracking, real-time balance, and enhanced closing report

- Save denomination breakdown for GL journal entries via new /cashier/gl-denomination endpoint
- Add payment type, date/time, teller name columns to GL Entries closing report
- Show GL badge for GL vouchers vs numeric ID for savings transactions
- Add payment type required and denomination overdraft validations for GL transactions
- Fix GL account number display in confirm dialog

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/cashier/cashier-shared.scss

@@ -542,9 +542,21 @@
 // GL Table
 .gl-table {
   .gl-th--voucher {
+    width: 80px;
+  }
+
+  .gl-th--date {
+    width: 100px;
+  }
+
+  .gl-th--pt {
     width: 110px;
   }
 
+  .gl-th--teller {
+    width: 120px;
+  }
+
   .gl-th--dr {
     color: #dc2626 !important;
   }
@@ -571,6 +583,51 @@
     color: #1e293b;
   }
 
+  .gl-badge {
+    display: inline-block;
+    padding: 2px 8px;
+    border-radius: 4px;
+    font-size: 10px;
+    font-weight: 800;
+    letter-spacing: 0.08em;
+    background: #dbeafe;
+    color: #1d4ed8;
+    text-transform: uppercase;
+  }
+
+  .gl-date {
+    font-size: 12px;
+    color: #64748b;
+    white-space: nowrap;
+  }
+
+  .gl-time {
+    font-size: 11px;
+    color: #94a3b8;
+    margin-top: 1px;
+  }
+
+  .gl-pt-badge {
+    display: inline-block;
+    padding: 2px 7px;
+    border-radius: 4px;
+    font-size: 11px;
+    font-weight: 600;
+    background: #f0fdf4;
+    color: #15803d;
+    border: 1px solid #bbf7d0;
+  }
+
+  .gl-pt-none {
+    color: #94a3b8;
+    font-size: 13px;
+  }
+
+  .gl-teller {
+    font-size: 12px;
+    color: #475569;
+  }
+
   .gl-amt--dr {
     color: #dc2626;
     font-weight: 700;